Air conditioner



FIG. 1 is a perspective view of an air conditioner showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a plan view thereof, a bottom view being symmetrical to the plan view;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a cross-sectional view thereof along the line 7-7 in FIG. 2.

The broken lines depict portions of the air conditioner that form no part of claimed design. 

CLAIM The ornamental design for an air conditioner, as shown and described. 